.add{
    position: fixed;
    z-index: 10;
    left: 0;
    right: 0;
    bottom: 0;
    line-height: 108rpx;
    height:108rpx;
    text-align: center;
    font-size:32rpx;
    color:#0ca2fa;
    background: white;
    box-shadow: 1rpx 1rpx 1rpx #000;
}